提交后插入不了数据 是我ajax写的不对吧？
tt.php
<code> <title></title> <script type="text/javascript"> function ajax(url,data,funsucc){ var oAjax=new XMLHttpRequest(); oAjax.open('POST',url,true); oAjax.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=UTF-8"); oAjax.send("aa="+data); oAjax.onreadystatechange=function(){ if(oAjax.readyState==4){ if(oAjax.status==200){ funsucc(oAjax.responseText); } } } } </script> <script type="text/javascript"> window.onload=function(){ var oTxt=document.getElementById('txt1'); var oBtn=document.getElementById('btn1'); oBtn.onclick=function(){ ajax("ajax.php",oTxt.value,function(){ window.location.reload(); }); } } </script><body> <button id="btn1" type="submit">提交</button></code>
ajax.php
<code><?php$pdo=new PDO("mysql:host=localhost;dbname=t1","root","");$txt=$_POST["aa"]; $stmt=$pdo->prepare("insert into ajax(txt)values(?)");$stmt->execute(array($txt));?></code>
回复内容：
提交后插入不了数据 是我ajax写的不对吧？
tt.php
<code> <title></title> <script type="text/javascript"> function ajax(url,data,funsucc){ var oAjax=new XMLHttpRequest(); oAjax.open('POST',url,true); oAjax.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=UTF-8"); oAjax.send("aa="+data); oAjax.onreadystatechange=function(){ if(oAjax.readyState==4){ if(oAjax.status==200){ funsucc(oAjax.responseText); } } } } </script> <script type="text/javascript"> window.onload=function(){ var oTxt=document.getElementById('txt1'); var oBtn=document.getElementById('btn1'); oBtn.onclick=function(){ ajax("ajax.php",oTxt.value,function(){ window.location.reload(); }); } } </script><body> <button id="btn1" type="submit">提交</button></code>
ajax.php
<code><?php$pdo=new PDO("mysql:host=localhost;dbname=t1","root","");$txt=$_POST["aa"]; $stmt=$pdo->prepare("insert into ajax(txt)values(?)");$stmt->execute(array($txt));?></code>
1、提交按钮点击默认会触发onsubmit事件，而你给它绑定的onclick事件里没有取消默认事件；
<code>oBtn.onclick=function(e){ var e=window.event||e; e.preventDefault&&e.preventDefault(); e.returnValue&&e.returnValue=false;}</code>
2、采用默认onsubmit，无视ajax，txt1加上name=”aa”；
<code>function ajax(url,data,funsucc){ var oAjax=new XMLHttpRequest(); oAjax.open('POST',url,true); oAjax.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=UTF-8"); oAjax.send("aa="+data);//在这里打个断点看看 oAjax.onreadystatechange=function(){ if(oAjax.readyState==4){ if(oAjax.status==200){ funsucc(oAjax.responseText); } } } }</code>
ajax这个函数这样改：
<code>function ajax(url,data,funsucc){ var oAjax=new XMLHttpRequest(); oAjax.open('POST',url,true); oAjax.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=UTF-8"); oAjax.onreadystatechange=function(){ if(oAjax.readyState==4){ if(oAjax.status==200){ funsucc(oAjax.responseText); } } } oAjax.send("aa="+data); }</code>
异步调用，不然数据发送/本文来源gaodai#ma#com搞*!代#%^码网%搞代gaodaima码不出去
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转载请注明原文链接：javascript – 这个post提交方式哪里写的不对呢？
转载请注明原文链接：javascript – 这个post提交方式哪里写的不对呢？
